Related Clues:

• 'Uh, no idea'
• Comment accompanying a shrug
• 'Couldn't tell ya!'
• ''No clue''
• Something said with a shrug
• ''Couldn't say''
• 'Unsure about that'
• Puzzled remark
• *shrug*
• 'Not a clue'
• "Beats the heck out of me"